Theirs not really a call for calmag these days with most base ferts if you use enough, when i look at lots of deficiencies online nowadays, 80 to 90% of them are basic mistakes and just underfeeding. If you were using chemical base ferts on a flowering plant an EC around 1.6 in bloom would prevent most deficiencies happening with correct ph. .I have been using Canna mutes, led lights. As I have moved into flower I get deficiencies. The received wisdom is Cal-mag. I tried my next grow with Cal-mag - only to get same deficiencies. In frustration I stopped Canna units and started just feeding nettle tea. I am now in mid flower and have a beautiful green plant with no deficiencies. So they are now in Canna Terra soil, and are fed exclusively with nettle tea and are thriving.
One of most common mistakes is when people flip to bloom the plants are stretching like mad they just carry on using same dose of feed they have been using when plants in veg and they dont up base fert EC ready for plants in bloom . For those first 3 weeks plant wallops down ferts so the base ferts need upping quite a bit to prevent shit like calcium def occurring . Most common deficiency you tend to see if you dont is calcium def around 4 to 5 weeks into 12/12 quite a lot of the time.
Statistics: Posted by 2-Scoops — Mon Sep 16, 2024 3:32 pm